3. Cables in a buried magnetic cylinder
An interesting case is where cables are located inside a cylinder made of magnetic material (which may, for example, be an approximation of a reinforced concrete tunnel). To model this, we need to know the potential vector created by a hollow conductive cylinder (the cable screen). We'll start here.
3.1 Hollow conductive cylinder in a magnetic cylinder
Consider the system shown in figure 10. A hollow conductive cylinder with radii x and y through which a current I flows is located inside a cylinder made of magnetic material. Since the potential vector created by a cylinder outside itself has the same expression when it is solid or hollow, it follows that, in the presence of the magnetic cylinder, the potential...
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Cables in a buried magnetic cylinder
Cables with two screens
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